Hunting Tower and Watchtower - Alibis a Sigmar Polke retrospective at the Tate Modern – he was viewed as one of the most experimental artists of recent times and the exhibition covers his full career, bringing together works from around the world in a huge variety of materials. Highlights include: Girlfriends – An iconic early Pop painting from 1965 of a bikini-clad girl; Potato House – Standing over 6 feet tall, this sculpture of a house is made from wooden lattices covered in real potatoes; Mao – A huge felt banner covered in scraps of cloth and painted with an image of Chairman Mao; Watchtowers – A series of neon-coloured paintings incorporating silver, resin, fabric and bubble-wrap; and other paintings made from such diverse materials as meteorite dust, soot, lead, coal, elastic bands and medical tape. The exhibition runs from 9 October 2014 – 8 February 2015. Tate Modern, Bankside, London, UK 07 Oct 2014. Guy Bell, 07771 786236, guy@gbphotos.com.